Who We Are


In 2013, Eric & Tammy met and quickly became friends. The friendship led to a business partnership. Tammy’s business experience along with Eric’s passion and knowledge of the window cleaning industry, make this partnership the perfect fit. Excited to grow a new business, they co-created Advanced Window Cleaning. Providing excellent customer service to the community of the Grand Valley is of the utmost importance to them – from the first call into the office to the final walkthrough with the technician. They always strive to do it the Advanced way.

Our Mission

Our mission at Advanced Window Cleaning is to build lasting relationships with our customers by providing them excellent customer service.  We are dedicated to hiring knowledgeable & friendly staff who thrive on providing excellent customer service and who are committed to doing the job right the first time.


Our Team

Tammy Hershberger

Tammy Accounting/HR

Tammy grew up dreaming of owning her own business. Having been the first in her family to go to college, she has since made this dream a reality and now owns two successful businesses.

Tammy who is a owner, is committed to running her businesses the same way she lives her life: with honesty, integrity and a passion and desire to give 100% to everything she does.

You will find Tammy in the office managing the bookkeeping, running the office, and dreaming up ways to grow the company and her team.

Eric Lammers

Eric Sales

From an incredibly young age, Eric has loved cleaning windows alongside his dad in their family-owned business in Arizona. Now, nearly two decades later, he still loves cleaning windows with his own company here in Colorado.

Eric who is a owner, is known for his hard work, his integrity, and how he takes pride in every job he does. Eric enjoys watching the excitement of each customer when they see a job well done.

You will find Eric out in the field doing bids and assisting on each job as our production manager and listening to podcasts as he enjoys learning new ways to grow his business and make it run more efficiently.

Monica of Advanced Window Cleaning

Monica Office Administrator

Monica is a mom of two and recently moved to Grand Junction. She enjoys hiking and the beautiful views that Grand Junction has to offer. In her free time she stays busy renovating her new home and playing with her two fur babies.

Justin Lead Tech

I have a beautiful son who I love to ride bikes with and play at the park with. I enjoy reading my Bible and books to help me grow spiritually. And I am a foodie, I love good flavorful food and fun experiences.

Ellisjah Assistant Tech

Ellisjah is very energetic and full of enthusiasm. He is goal driven and always strives to be better than the day before. Music is his life but he also enjoys being anywhere there is a body of water.

Brody Assistant Tech

I recently moved to Grand Junction from California. I enjoy dirt bike riding and playing golf. I love tacos!!!!

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